I need help with a aprillia sr50 motard

i’m planning on buying a derestricted sport exhaust, i need help knowing what jetting i need, rollers and clutch springs

 

The motard is piaggio AC so i would suggest BR9ES, as for jetting you need to check what carb does it have and what jets and from there, also for rollers you can use your stock ones to see where it runs with rpms then after them adjust, clutch springs come last.